Quartz sand pickling reaction tank

Abstract

The utility model relates to a quartz sand pickling reaction tank. The quartz sand pickling reaction tank comprises a tank body, a bottom guide plate, an isolation rib plate, a bottom partition plate, a bottom baffle, a mounting cylinder, an acid discharge filter cylinder and a high-pressure flushing pipe. Acid liquor filtered out by the acid discharge filter cylinder enters the mounting cylinder and the cavity and then is discharged through the acid discharge port, and the stability of the acid discharge amount is guaranteed through the arrangement of the first communication hole. The bottom flow guide plate and the bottom partition plate are both in a funnel shape with the low middle and the high periphery, static pressure borne by quartz sand at the bottom in the tank body can be reduced, the quartz sand is helped to form falling flow under the action of the gravity of the quartz sand, and the probability of quartz sand hardening is reduced. High-pressure water in the high-pressure flushing pipe is sprayed out through the first flushing opening to form high-pressure water flow which is inclined downwards, so that the quartz sand is loosened to form a flowing area from bottom to top, the probability of quartz sand hardening is further reduced, and therefore, the quartz sand pickling reaction tank has the advantages of relatively high acid discharging stability and relatively high sand discharging speed; and the pickling efficiency of the quartz sand is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of quartz sand purification equipment, and in particular to a quartz sand acid washing reaction tank. Background Technology

[0002] In the traditional quartz sand purification industry, during the purification and cleaning process in the reaction tank, the quartz sand needs to be soaked in oxalic acid and hydrofluoric acid for a long time. This causes the quartz sand to easily clump under its own gravity and static pressure, affecting the acid washing effect and making sand and acid removal difficult, thus impacting the acid washing efficiency. Utility Model Content

[0003] Based on the problem of difficult sand and acid discharge caused by quartz sand caking during the traditional quartz sand pickling and purification process, it is necessary to provide a quartz sand pickling reaction vessel that can solve the problem of easy caking during the quartz sand pickling process, thereby improving the quartz sand pickling efficiency.

[0004] A quartz sand pickling reaction vessel, comprising:

[0005] The tank has a top and a bottom. The top has a sand inlet, an acid inlet, and an acid overflow outlet that are spaced apart. The height of the sand inlet and the acid inlet is higher than the height of the acid overflow outlet. The bottom has a sand outlet, an acid outlet, and a water inlet.

[0006] A bottom guide plate is arranged around the central axis of the sand discharge port and is funnel-shaped with a lower center and higher edges; the outer edge of the bottom guide plate is fixedly connected to the inner wall of the bottom end.

[0007] The isolation ribs are arranged around the central axis of the sand discharge port, and both ends are fixedly connected to the end of the bottom guide plate near the sand discharge port and the bottom wall of the tank, respectively.

[0008] A bottom partition is arranged around the central axis of the sand discharge port and is funnel-shaped with a lower center and higher edges; the outer edge of the bottom partition is fixedly connected to the side of the isolation rib facing the sand discharge port; mounting holes are provided on the bottom partition.

[0009] A bottom baffle is arranged around the central axis of the sand discharge port, and its two ends are respectively fixedly connected to the end of the bottom partition near the sand discharge port and the bottom wall of the tank body; a cavity is formed between the bottom baffle, the bottom partition, the isolation rib and the bottom wall of the tank body;

[0010] The mounting cylinder is a cylindrical structure with openings at both ends; the mounting cylinder passes through and is fixed to the mounting hole, one end is fixedly connected to the bottom wall of the tank, and the other end is located on the side of the bottom partition facing the top; a first connecting hole is opened on the side wall of the end of the mounting cylinder located in the cavity; the acid discharge port is located inside the mounting cylinder;

[0011] Acid discharge filter cartridge, a hollow structure with one open end; the open end of the acid discharge filter cartridge is installed on the end of the mounting cylinder away from the acid discharge port; the side wall of the acid discharge filter cartridge is provided with a plurality of filter holes spaced apart;

[0012] A high-pressure flushing pipe is arranged circumferentially along the sand discharge port, installed in the mounting cylinder, and located on the side of the bottom partition facing the top; the high-pressure flushing pipe is connected to the water inlet; the side wall of the high-pressure flushing pipe is provided with a plurality of inclined downward flushing ports spaced apart along the circumferential direction of the sand discharge port.

[0013] In one embodiment, the sidewall of the mounting cylinder located at one end of the cavity is provided with a plurality of first connecting holes spaced apart circumferentially.

[0014] In one embodiment, the wall portion of the first connecting hole is located on the bottom wall of the tank body.

[0015] In one embodiment, there are multiple acid drainage ports, mounting cylinders, and acid drainage filter cylinders; the open ends of the multiple acid drainage filter cylinders are respectively installed one-to-one on the ends of the multiple mounting cylinders facing the top; the number of acid drainage ports is greater than or equal to the number of mounting cylinders; each mounting cylinder has at least one acid drainage port.

[0016] In one embodiment, the acid discharge filter cartridge is detachably fitted with a filter cloth bag.

[0017] In one embodiment, the system further includes multiple bottom stiffeners; each bottom stiffener is vertically disposed on the side of the bottom partition away from the top, and its two ends are respectively connected to the bottom partition and the bottom wall of the tank; the multiple bottom stiffeners are interconnected to form multiple cavities; each bottom partition is provided with a second connecting hole that connects the cavities on both sides.

[0018] In one embodiment, a plurality of second flushing ports are provided at circumferential intervals on the side wall of the high-pressure flushing pipe along the sand discharge port; the opening direction of the second flushing ports is consistent with the direction from the top end to the bottom end.

[0019] In one embodiment, a grid is installed inside the sand inlet.

[0020] In one embodiment, an inner overflow weir is further installed within the top end; the bottom wall of the inner overflow weir is an inclined surface that is tilted relative to the direction from the top end to the bottom end; the acid discharge outlet is located at the lowest point of the bottom wall of the inner overflow weir and on the side of the bottom wall of the inner overflow weir away from the bottom end.

[0021] In one embodiment, the top end is further provided with an inspection port; a transparent window is installed at the inspection port; and an inspection ladder is installed on the inner wall of the tank and located below the inspection port.

[0022] The aforementioned quartz sand pickling reactor features numerous filter holes on the acid discharge filter cylinder, which filter out the acid from the quartz sand-acid mixture. The filtered acid enters the mounting cylinder and cavity, and is then discharged through the acid discharge port. The first connecting hole is designed to ensure the stability of the acid discharge rate. Because the bottom guide plate and bottom baffle are funnel-shaped (lower in the middle and higher around the edges), the static pressure on the quartz sand at the bottom of the tank is reduced, helping the quartz sand to flow downwards under its own weight, thus reducing the probability of quartz sand caking. High-pressure water from the high-pressure flushing pipe connected to the inlet is sprayed out through the first flushing port, forming a downward-sloping high-pressure water flow that loosens the quartz sand, creating an upward-flowing area and further reducing the probability of quartz sand caking. Therefore, the aforementioned quartz sand pickling reactor solves the problem of easy caking during the quartz sand pickling process, offering advantages such as high acid discharge stability and fast sand discharge speed, thereby significantly improving the quartz sand pickling efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the quartz sand pickling reaction vessel in a preferred embodiment of the present invention;

[0024] Figure 2 for Figure 1 The diagram shows the installation status corresponding to the top of the quartz sand pickling reaction vessel.

[0025] Figure 3 for Figure 1 The diagram shows the installation status at the bottom of the quartz sand pickling reaction vessel.

[0026] Figure 4 for Figure 3 The diagram shown is a partial enlarged view of the bottom end corresponding to the installation state.

[0027] Labeling Explanation: 100, Quartz Sand Pickling Reaction Tank; 110, Tank Body; 111, Top; 112, Bottom; 113, Sand Inlet; 114, Acid Inlet; 115, Acid Overflow Outlet; 116, Sand Outlet; 117, Acid Outlet; 118, Water Inlet; 119, Inspection Port; 120, Bottom Baffle; 130, Isolation Rib; 140, Bottom Baffle; 150, Bottom Baffle; 160 161. Installation cylinder; 170. First connecting hole; 171. Acid discharge filter cylinder; 180. High-pressure flushing pipe; 181. First flushing port; 182. Second flushing port; 190. Cavity; 1010. Bottom stiffener; 1011. Partition cavity; 1012. Second connecting hole; 1020. Grid; 1030. Inner overflow weir; 1040. Transparent window; 1050. Maintenance ladder. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements. It is also understood that when an element is referred to as being "between" two elements, it may be the only one between the two elements, or there may be one or more intermediate elements.

[0031] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0032] Please see Figures 1 to 3The quartz sand pickling reaction tank 100 in the preferred embodiment of this utility model includes a tank body 110, a bottom guide plate 120, an isolation rib plate 130, a bottom partition plate 140, a bottom baffle plate 150, an installation cylinder 160, an acid discharge filter cylinder 170, and a high-pressure flushing pipe 180.

[0033] The tank body 110 has a top end 111 and a bottom end 112. The top end 111 has a sand inlet 113, an acid inlet 114, and an acid overflow outlet 115, which are spaced apart. The positions of the sand inlet 113 and the acid inlet 114 are both higher than the position of the acid overflow outlet 115. The bottom end 112 has a sand outlet 116, an acid outlet 117, and a water inlet 118. When the quartz sand pickling reaction tank 100 is in a horizontal position, the top end 111 and the bottom end 112 are the upper and lower ends of the tank body 110, respectively. Therefore, the direction from the top end 111 to the bottom end 112 is vertically downward.

[0034] The bottom guide plate 120 is arranged around the central axis of the sand discharge port 116 and is funnel-shaped with a lower center and higher edges. The outer edge of the bottom guide plate 120 is fixedly connected to the inner wall of the bottom end 112.

[0035] The isolation rib plate 130 is arranged around the central axis of the sand discharge port 116, and its two ends are fixedly connected to the end of the bottom guide plate 120 near the sand discharge port 116 and the bottom wall of the tank body 110, respectively. In this way, the isolation rib plate 130 is arranged vertically.

[0036] The bottom baffle 140 is arranged around the central axis of the sand discharge port 116 and is funnel-shaped, with a lower center and higher edges. The outer edge of the bottom baffle 140 is fixedly connected to the side of the isolation rib plate 130 facing the sand discharge port 116. The bottom baffle 140 has mounting holes (not shown in the figure). Specifically, the position height of the outer edge of the bottom baffle 140 is lower than or equal to the position height of the inner edge of the bottom guide plate 120 to ensure that all the quartz sand on the bottom guide plate 120 can slide smoothly onto the bottom baffle 140.

[0037] A bottom baffle 150 is arranged around the central axis of the sand discharge port 116, and its two ends are fixedly connected to the end of the bottom partition 140 near the sand discharge port 116 and the bottom wall of the tank body 110, respectively. A cavity 190 is formed between the bottom baffle 150, the bottom partition 140, the isolation rib 130, and the bottom wall of the tank body 110. Therefore, the cavity 190 is an annular cavity arranged around the central axis of the sand discharge port 116.

[0038] The mounting cylinder 160 is a cylindrical structure open at both ends. The mounting cylinder 160 passes through and is fixed to the mounting hole, with one end fixedly connected to the bottom wall inside the tank 110, and the other end located on the side of the bottom partition 140 facing the top 111. A first connecting hole 161 is opened on the side wall of one end of the mounting cylinder 160 inside the cavity 190. The acid discharge port 117 is located inside the mounting cylinder 160.

[0039] The acid discharge filter cartridge 170 has a hollow structure with one open end. The open end of the acid discharge filter cartridge 170 is installed on the end of the mounting cylinder 160 away from the acid discharge port 117. The side wall of the acid discharge filter cartridge 170 is provided with a plurality of filter holes 171 spaced apart.

[0040] Please refer to the following: Figure 4 A high-pressure flushing pipe 180 is arranged circumferentially along the sand discharge port 116 and mounted on the mounting cylinder 160. The high-pressure flushing pipe 180 is located on the side of the bottom partition 140 facing the top 111 and is connected to the water inlet 118. Therefore, the high-pressure flushing pipe 180 is an annular pipe and is connected to the water inlet 118. The side wall of the high-pressure flushing pipe 180 is provided with a plurality of inclined downward flushing ports 181 spaced apart circumferentially along the sand discharge port 116. Specifically, the opening of the first flushing port 181 faces the direction of the sand discharge port 116.

[0041] The aforementioned quartz sand pickling reaction tank 100 has numerous filter holes 171 formed on the acid discharge filter cylinder 170 to filter the acid in the quartz sand pickling mixture inside the tank 110. The filtered acid enters the mounting cylinder 160 and the cavity 190, and is then discharged through the acid discharge port 117. The first connecting hole 161 ensures the interconnection between the space inside the mounting cylinder 160 and the cavity 190, thereby ensuring the stability of the acid discharge volume. Because the bottom guide plate 120 and the bottom baffle 140 are both funnel-shaped with a low center and high edges, the static pressure on the quartz sand at the bottom of the tank 110 can be reduced, helping the quartz sand to flow downwards under its own gravity, thus reducing the probability of quartz sand caking. High-pressure water in the high-pressure flushing pipe 180, connected to the inlet 118, is ejected through the first flushing port 181, forming a downward-sloping high-pressure water flow. Under the action of multiple downward-sloping high-pressure water flows, the quartz sand is loosened, creating an upward-flowing zone and further reducing the probability of quartz sand caking. Therefore, the aforementioned quartz sand pickling reaction tank 100 solves the problem of easy caking during the quartz sand pickling process, and has the advantages of high acid discharge stability and fast sand discharge speed, thereby greatly improving the quartz sand pickling efficiency.

[0042] In some embodiments, the sidewall of the mounting cylinder 160 located at one end inside the cavity 190 is provided with a plurality of first connecting holes 161 spaced apart circumferentially. In practical applications, acid that is not discharged through the acid discharge port 117 immediately inside the mounting cylinder 160 can flow into the cavity 190 through the plurality of first connecting holes 161, so as to ensure that the acid discharge filter cylinder 170 can filter the quartz sand acid mixture at a normal speed, thereby further improving the acid discharge stability.

[0043] In some embodiments, a portion of the wall of the first connecting hole 161 is located on the bottom wall inside the tank 110. Thus, a portion of the bottom wall inside the tank 110 serves as the wall of the first connecting hole 161, reducing the probability of acid accumulating in the cavity 190 and allowing for more thorough acid discharge.

[0044] In some embodiments, there are multiple acid drainage ports 117, mounting cylinders 160, and acid drainage filter cylinders 170. The open ends of the multiple acid drainage filter cylinders 170 are respectively mounted one-to-one with the ends of the multiple mounting cylinders 160 facing the top 111. The number of acid drainage ports 117 is greater than or equal to the number of mounting cylinders 160. Each mounting cylinder 160 contains at least one acid drainage port 117.

[0045] The number of acid discharge filter cartridges 170 and acid discharge ports 117 can be set according to the acid discharge requirements in the process. Therefore, multiple acid discharge ports 117, installation cylinders 160, and acid discharge filter cartridges 170 can be set to further increase the acid discharge capacity and further improve the acid washing efficiency of quartz sand.

[0046] In some embodiments, a filter bag (not shown) is detachably fitted onto the acid discharge filter cartridge 170. The filter bag not only improves the filtration effect of the quartz sand, but also solves the problem of quartz sand clogging by quickly replacing the filter bag, further improving the acid washing efficiency of the quartz sand.

[0047] In some embodiments, the quartz sand pickling reactor 100 further includes a plurality of bottom stiffeners 1010. Each bottom stiffener 1010 is vertically disposed on the side of the bottom partition 140 opposite to the top end 111, and its two ends are respectively connected to the bottom partition 140 and the bottom wall of the reactor body 110. The plurality of bottom stiffeners 1010 are interconnected to form a plurality of cavities 1011. Each bottom partition 140 has a second connecting hole 1012 that connects the cavities 1011 on both sides.

[0048] Thus, the multiple bottom stiffeners 1010 mainly serve to strengthen the bottom guide plate 120, while the multiple cavities 1011 and the second connecting holes 1012 connecting adjacent cavities 1011 are mainly to maintain the heat and pressure balance of the bottom guide plate 120, reduce the probability of deformation or breakage of the bottom guide plate 120 due to excessive heat and pressure, and thus effectively extend the service life of the quartz sand pickling reaction tank 100.

[0049] In some embodiments, a plurality of second flushing ports 182 are provided circumferentially at intervals along the sand discharge port 116 on the sidewall of the high-pressure flushing pipe 180. The opening direction of the second flushing ports 182 is consistent with the direction from the top end 111 to the bottom end 112. Thus, the second flushing ports 182 are located at the bottom of the high-pressure flushing pipe, and the openings of the second flushing ports 182 face the same direction. In actual use, the high-pressure water in the high-pressure flushing pipe 180 is ejected through the second flushing ports 182 to form multiple streams of high-pressure water rushing towards the bottom partition 140. After the high-pressure water stream collides with the bottom partition 140, turbulence is formed in the area above the bottom partition 140, increasing the fluidity of the flow area formed by the high-pressure water stream ejected from the first flushing port 181, thereby further reducing the probability of quartz sand caking.

[0050] In some embodiments, a grid 1020 is installed inside the sand inlet 113. The grid 1020 ensures that the quartz sand is in a loose state when it enters the tank 110 through the sand inlet 113, and does not form slabs, thereby further reducing the probability of quartz sand caking.

[0051] In some embodiments, the quartz sand pickling reactor 100 further includes an inner overflow weir 1030 installed within the top end 111. The bottom wall of the inner overflow weir 1030 is an inclined surface relative to the direction from the top end 111 to the bottom end 112. The acid discharge overflow port 115 is located at the lowest point of the bottom wall of the inner overflow weir 1030, and is on the side of the bottom wall of the inner overflow weir 1030 opposite to the bottom end 112. When the quartz sand pickling reactor 100 is in a horizontal plane, the direction from the top end 111 to the bottom end 112 is a vertically downward direction. Similarly, the side of the bottom wall of the inner overflow weir 1030 pointing to the bottom end 112 refers to the upper part of the bottom wall of the inner overflow weir 1030.

[0052] Therefore, the bottom wall of the inner overflow weir 1030 is an inclined surface that slopes downward relative to the horizontal plane, and the acid discharge overflow port 115 is located at the lowest position in the inner overflow weir 1030 and above the bottom wall of the inner overflow weir 1030, so that the acid in the tank 110 is discharged from the acid discharge overflow port 115 in the overflow weir. In this way, the acid discharge speed is increased by the method of acid discharge from top to bottom, so as to further improve the acid washing efficiency of quartz sand.

[0053] In some embodiments, the top 111 also forms an access port 119. A transparent viewing window 1040 is installed at the access port 119. A maintenance ladder 1050 is installed on the inner wall of the tank 110 and is located below the access port 119. The access port 119 and the maintenance ladder 1050 are provided to facilitate personnel to enter the bottom of the tank 110 for maintenance work. The transparent viewing window 1040 allows personnel to observe the situation inside the tank 110 at any time.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A quartz sand pickling reaction vessel, characterized in that, include: The tank has a top and a bottom. The top has a sand inlet, an acid inlet, and an acid overflow outlet that are spaced apart. The height of the sand inlet and the acid inlet is higher than the height of the acid overflow outlet. The bottom has a sand outlet, an acid outlet, and a water inlet. A bottom guide plate is arranged around the central axis of the sand discharge port and is funnel-shaped with a lower center and higher edges; the outer edge of the bottom guide plate is fixedly connected to the inner wall of the bottom end. The isolation ribs are arranged around the central axis of the sand discharge port, and both ends are fixedly connected to the end of the bottom guide plate near the sand discharge port and the bottom wall of the tank, respectively. A bottom partition is arranged around the central axis of the sand discharge port and is funnel-shaped with a lower center and higher edges; the outer edge of the bottom partition is fixedly connected to the side of the isolation rib facing the sand discharge port; mounting holes are provided on the bottom partition. A bottom baffle is arranged around the central axis of the sand discharge port, and its two ends are respectively fixedly connected to the end of the bottom partition near the sand discharge port and the bottom wall of the tank body; a cavity is formed between the bottom baffle, the bottom partition, the isolation rib and the bottom wall of the tank body; The mounting cylinder is a cylindrical structure with openings at both ends; the mounting cylinder passes through and is fixed to the mounting hole, one end is fixedly connected to the bottom wall of the tank, and the other end is located on the side of the bottom partition facing the top. The mounting cylinder has a first connecting hole on the side wall at one end of the cavity; the acid discharge port is located inside the mounting cylinder; Acid discharge filter cartridge, a hollow structure with one open end; the open end of the acid discharge filter cartridge is installed on the end of the mounting cylinder away from the acid discharge port; the side wall of the acid discharge filter cartridge is provided with a plurality of filter holes spaced apart; A high-pressure flushing pipe is arranged circumferentially along the sand discharge port, installed in the mounting cylinder, and located on the side of the bottom partition facing the top; the high-pressure flushing pipe is connected to the water inlet; the side wall of the high-pressure flushing pipe is provided with a plurality of inclined downward flushing ports spaced apart along the circumferential direction of the sand discharge port.

2. The quartz sand pickling reaction vessel according to claim 1, characterized in that, The mounting cylinder has multiple first connecting holes spaced apart circumferentially on the side wall at one end of the cavity.

3. The quartz sand pickling reaction vessel according to claim 1, characterized in that, The wall portion of the first connecting hole is located on the bottom wall of the tank body.

4. The quartz sand pickling reaction vessel according to claim 1, characterized in that, There are multiple acid discharge ports, multiple mounting cylinders, and multiple acid discharge filter cylinders; the open ends of the multiple acid discharge filter cylinders are respectively installed one-to-one on the ends of the multiple mounting cylinders facing the top; the number of acid discharge ports is greater than or equal to the number of mounting cylinders; each mounting cylinder has at least one acid discharge port.

5. The quartz sand pickling reaction vessel according to claim 1, characterized in that, The acid discharge filter cartridge is detachably fitted with a filter cloth bag.

6. The quartz sand pickling reaction vessel according to claim 1, characterized in that, It also includes multiple bottom stiffeners; each bottom stiffener is vertically disposed on the side of the bottom partition away from the top, and its two ends are respectively connected to the bottom partition and the bottom wall of the tank; the multiple bottom stiffeners are interconnected to form multiple cavities; each bottom partition is provided with a second connecting hole that connects the cavities on both sides.

7. The quartz sand pickling reaction vessel according to claim 1, characterized in that, Multiple second flushing ports are provided at intervals along the circumference of the sand discharge port on the side wall of the high-pressure flushing pipe; the opening direction of the second flushing ports is consistent with the direction from the top end to the bottom end.

8. The quartz sand pickling reaction vessel according to claim 1, characterized in that, A grid-like grille is installed inside the sand inlet.

9. The quartz sand pickling reaction vessel according to claim 1, characterized in that, It also includes an inner overflow weir installed inside the top; the bottom wall of the inner overflow weir is an inclined surface that is inclined relative to the direction from the top to the bottom; the acid discharge outlet is located at the lowest position of the bottom wall of the inner overflow weir, and on the side of the bottom wall of the inner overflow weir away from the bottom.

10. The quartz sand pickling reaction vessel according to claim 1, characterized in that, The top also has an inspection port; a transparent window is installed at the inspection port; an inspection ladder is installed on the inner wall of the tank and is located below the inspection port.

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